Universal coupling



Uh wwu I!- Q. JENNHNG UNIVERSAL COUPLING;

Filed April 13, 1926 ill flit

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unrvnnsan CQUPLINQ.

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This invention relates to a universal coupling or driving connection by which rotary motion may be transmitted from a driving member to. driven member without requiring enact alignment of said members for satisfactory and efficient operation.

It is the general object, of my present invention to provide an improved form of universal coupling or driving connection for such purposes, which is of an. lmproved and simplified construction and which may be easily and cheaply manufactured.

- A further object is to provide a universal coupling which may be very easily assembled with the driving and driven members and which permits of considerable variation in the axial spacing of said members.

An im ortant feature of the invention relates to t e specific construction of certain of the parts,'by, which they ma be easily reroducedby ordinaryre airs p equipment, if one of'these parts s ould be broken or lost on ship-board or in some other remote or inaccessible re ion.

My invention'urther relates to arrange" ments and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in whlch Q vl ig. l is a sectional plan view of portions of a water pump and an air pump operativelyl. connected by my improved universal coul9 mg i Fig. 2 is a transverse sectional view at one end of the coupling member, taken along the line 2-2 in Fig.1; and

:liig. 3 is a similar view at the other end of the coupling member, taken along the line 3-3 in Fig. 1.

Referring to the drawings mill: have shown my improved coupling member as connect-- ing the impeller shaft of a centrifugal water pump with the rotor 11 ofa rotary air pump, which. is indicated as being of the hydro-turbine type.

A shaft 12 supports the rotor 11 in suitable bearin s but extends only partially through the ub of the rotor ll. A circular recess 113 is provided within the hub of the rotor, said recess 13 having axially extended slots l'd at each side thereof, which are prefnot only forms a portion of the universal coupling, but also referably acts as a retaining device to ho dthe impellerlt) on the impeller shaft 10.. I

At its outer end, the sleeve 16 is provided with a cylindrical recess 20 (Fig. 3), which recess is rovided with axially eatende slots 2i, whic are also preferably diametrically opposed. The recessed portion of the sleeve 16 may project through a flanged plate or sealing member 22 into the casing 23 of the air pump. I

The couling member 25 preferably con sists of a s ort shaft or rod having enlarged and partially spherical end )ortions 26 and 27. It transverse cylindrica opening 28 is provided in each head portion 2ti'or" 27, and these recesses 28 are preferably disposed at Fig; l.

A cylindrical driving pin 30 is rotatably mounted in each transverserecess 28 and the ends of each in EEO-are preferably slabbed off or tlattene to slide freely in the slots It and 21.. i a

When the parts are assembled as indicated in bi l, the coupling member 25 is connecte to the driving shaft 10 and sleeve 16 y by a driving pin 30 in the head portion 26, and the coupling member is'also connected to the driven member ll by a second drivin pin 30 in the head portion 27. 'lhese driving pins are freely slidable axiall in the slots it or 21 but are held from clrcumferential movement in said driving and driven members. The coupling member 25 has free angular movement relative tothe driving pins.

The construction of the slotted recess 20 in the end of the sleeve 16, instead of forming the recess directly in the end of the shaft 10, makes the device much simpler to repair in places where spare arts cannot be obtained.

This type of coup ing is largely used in meagre equipment usually found on ship board.

l llhile certain of the advantages of my invention might be attained by use of driving pins of the full'size throughout their length ,7

and also by theuse of dr ving pins having tilt right angles to each other, as indicated in tilt but

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. their axes parallel instead of perpendicular,

tial Wall, said sleeve having its free end extending through a sealing member, of a casing in which said second rotatable member. is mounted, and said second member also having an axial slotted recess, and a coupling 20 member having cross pins seated in said slots and connecting said rotatable members, said sleeve having a nut shaped outer portion and a threaded inner ortion engageable with said first member, W iereby said sleeve may be I prefer the construction shown in the drawings which possesses substantial additional advantages. M 5 Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claim, but vvhat I claim is.

10 A universal coupling'for adjacent rotatable members comprising a sleeve secured upon and extending beyond the endof one of said members to form the circumferential wall'of an axial recess and having opposed longi- 15 tudinally disposed slots in said circumferen- I rotated and moved axially oi" the coupling member. i

In testimony whereof I have hereunto affixed my signature.

9 IRVING C. JENNINGS. 

